Home / 12,726.92-17,565.19-7,691.76

Finding the Fourth Proportional to 12,726.92, 17,565.19 and 7,691.76

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Solution

The fourth proportional to 12,726.92, 17,565.19 and 7,691.76 is: 10,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.92 : 17,565.19 = 7,691.76 : x
  2. Step 2: Convert to fraction form
    12,726.92/17,565.19 = 7,691.76/x
  3. Step 3: Cross multiply
    12,726.92x = 17,565.19 × 7,691.76
  4. Step 4: Simplify right side
    12,726.92x = 135,107,206.61
  5. Step 5: Solve for x
    x = 135,107,206.61/12,726.92
  6. Step 6: Final answer
    x = 10,615.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.